# Sleep Effect vs noiss

The clearest difference is iOS requirement: noiss at 18.0 against Sleep Effect's 26.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sleep Effect | noiss |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 324 MB | 59 MB |
| Requires iOS | 26.1 | **18.0** |
| Devices | iPhone, iPad | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ahmed Nabulsi](https://appshunter.io/developer/1863897890) | [Igor Gottschalg Duarte](https://appshunter.io/developer/6788576104) |

## What reviewers say

### Sleep Effect

[App page](https://appshunter.io/ios/app/sleep-effect/id6762162467)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### noiss

[App page](https://appshunter.io/ios/app/noiss-focus-sounds/id6791748575)

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Effect free?

Sleep Effect is free to download, with no in-app purchases.

### Is noiss free?

noiss is free to download, with no in-app purchases.

### Do Sleep Effect or noiss have ads?

Neither Sleep Effect nor noiss shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*